Hide sync library option when sync is disabled

[FuSan21]

Tried to implement this draft pull (https://github.com/jobobby04/TachiyomiSY/pull/1203) as it was inactive for a long time.

• Add isSyncEnabled parameter to LibraryToolbar and LibraryRegularToolbar
• Pass isSyncEnabled from LibraryTab to LibraryToolbar
• Conditionally display sync library action based on isSyncEnabled
• Update LibraryContent to include isSyncEnabled parameter
• Adjust LibraryTab to handle sync-related functionality
• Remove direct dependency on SyncPreferences in LibraryToolbar

Images

Sync On	Sync Off

[FuSan21]

Newbie here, so please check the PR with extra caution.

Currently, it works, but an app restart is needed for changes to show in the library. I'm not sure how to make it work in real-time, so I could use some help with that.

[jobobby04]

Looks good otherwise

[FuSan21]

Tested it, and seems to be working as expected